feat(svelte): export __iconData and __iconNode across per-icon modules (#4936) (#4957)

* feat(svelte): export __iconData and __iconNode across per-icon modules (#4936)

* Refactor imports in lucide-svelte.spec.ts

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* fix(build-icons): scope per-icon data re-exports behind exportIconData flag

- Problem: generateAliasesFiles unconditionally re-exported __iconData and __iconNode for all packages using separateAliasesFile. Packages like @lucide/solid and @lucide/icons do not export these names from their templates, causing missing export errors in downstream bundlers (e.g. solid vite integration).
- Solution: Add exportIconData flag (default false) to CLI, generateIconFiles, and generateAliasesFiles so named re-exports are opt-in and only emitted for packages that define them (@lucide/svelte).

* refactor(svelte): remove tools/build-icons changes per maintainer review

---------

Co-authored-by: Eric Fennis <eric.fennis@gmail.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

packages/svelte/scripts/exportTemplate.mts

@@ -9,14 +9,23 @@ export default defineExportTemplate(
 
     return `\
 ${getHTMLBanner()}
+<script module lang="ts">
+import type { LucideIconData, LucideIconNode } from '../types.js';
+
+export const __iconData: LucideIconData = ${JSON.stringify(iconData)};
+
+/**
+ * @deprecated Access \`__iconData\` instead.
+ */
+export const __iconNode: LucideIconNode[] = __iconData.node;
+</script>
+
 <script lang="ts">
 import Icon from '../Icon.svelte';
-import type { LucideProps, LucideIconData } from '../types.js';
+import type { LucideProps } from '../types.js';
 
 let props: LucideProps = $props();
 
-const iconData: LucideIconData = ${JSON.stringify(iconData)};
-
 </script>
 
 <!--
@@ -29,7 +38,7 @@ Lucide SVG icon component, renders SVG Element with children.
 ${deprecated ? `\n@deprecated ${deprecationReason}\n` : ''}\
 -->
 
-<Icon {...props} icon={iconData} />
+<Icon {...props} icon={__iconData} />
 `;
   },
 );

packages/svelte/tests/lucide-svelte.spec.ts

@@ -1,6 +1,7 @@
 import { describe, it, expect, afterEach } from 'vitest';
 import { render, cleanup } from '@testing-library/svelte';
 import { Smile, Pen, Edit2 } from '../src/lucide-svelte.js';
+import { __iconData, __iconNode } from '../src/icons/face-slightly-smiling.svelte';
 import TestSlots from './TestSlots.svelte';
 import ContextWrapper from './ContextWrapper.svelte';
 
@@ -132,3 +133,14 @@ describe('Icon Component Accessibility', () => {
     expect(container.firstChild).not.toHaveAttribute('aria-hidden');
   });
 });
+
+describe('Per-icon data export', () => {
+  it('should export __iconData and __iconNode from the svelte component module', () => {
+    expect(__iconData).toBeDefined();
+    expect(__iconData.name).toBe('face-slightly-smiling');
+    expect(__iconData.size).toBe(24);
+    expect(Array.isArray(__iconData.node)).toBe(true);
+    expect(__iconData.node.length).toBeGreaterThan(0);
+    expect(__iconNode).toEqual(__iconData.node);
+  });
+});